Gold last for a long time because it is durable. Gold jewelry will last for a long time when it is made purely of gold.
It stands for gold filled. Gold Filled jewellery is used to describe a specific form of gold plating it is NOT filled with gold but it is an alternative to solid gold jewellery. Gold Filled Jewellery is a solid layer of quality gold heat bonded to an internal jewellers metal. GF jewellery is long lasting and if you take care of your pieces e.g no harsh cleaners and take your jewellery of befor going in bath/shower etc it can last a lifetime
it will not last long it will last atleast 2 and a half hours long
The thickness of gold on a gold-filled watch varies, including on the same watch, as a gold-filled finish can vary in thickness. But generally, a gold-filled finish will be about 20-40 microns thick. A 20 micron gold-plate finish is a bit thinner than most filled-gold finishes but is more uniform. A 20 micron gold-plate finish will wear a long time and compares well with a gold-filled finish.
The easiest way that you could find out that your gold chain is real, is if it changes from that gold luster to a brown after long contact with your skin. Gold is also rather heavy, so if your chain feels unusually light, that may be another indication that it's fake.
Not long, all over the world people buy and use gold
200,000 miles plus
It should last the life of the engine.
Timing chains are designed to last the life of the engine and are normally replaced during a complete engine rebuild.
1 month
1 month
Approx 3 years for gold electroplating.